Question
A body is moving along a circular path. How much work is done by the centripetal force?

Answer

W = FS cos 90° = 0.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

An ideal liquid is flowing in a cylindrical tube of internal diameter $4 cm$ with a velocity of $5 ms ^{-1}$. If this tube is connected to another tube of internal diameter $2 cm$, then the velocity of the liquid in the second tube will be?
A physical quantity $P$ is related to four observables $a , b , c$ and $d$ as follows :
$
P =\frac{a^3 b^2}{d \sqrt{c}}
$
The percentage errors of measurement in $a , b , c$ and $d$ are $1 \%, 3 \%, 4 \%$ and $2 \%$ respectively. What is the percentage error in the quantity P?
Determine the number of light years in one metre.
An iceberg of density $900 kgm ^{-3}$ is floating in water of density $1000 kgm ^{-3}$. What is the percentage of volume of iceberg outside the water?
Which component of linear momentum does not contribute to angular momentum?
When do the real gases obey more correctly the gas equation: PV = nRT?
A solid floats in liquid A with half its volume immersed and in liquid B with $\frac{2}{3}$ of its volume immersed. The densities of the liquids $A$ and $B$ are in the ratio.
One mole of an ideal gas at STP occupies 22.4 L. What is the ratio of molar volume to atomic volume of a mole of hydrogen? Why is the ratio so large? Take radius of hydrogen molecule to be 1°A.
When is the magnitude of $(\overline{ A }+\overline{ B })$ equal to the magnitude of $(\overline{ A }-\overline{ B })$ ?
A body of mass $‘m’$ kg starts falling from a point $2R$ above the Earth’s surface. What is its $K.E.$ When it has fallen to a point $‘R’$ above the Earth’s surface.